shrotpackYX.h revision 05b261ec 
1/*
2 * Copyright © 2004 Philip Blundell
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of Philip Blundell not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission.  Philip Blundell makes no
11 * representations about the suitability of this software for any purpose.  It
12 * is provided "as is" without express or implied warranty.
13 *
14 * PHILIP BLUNDELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL PHILIP BLUNDELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20 * PERFORMANCE OF THIS SOFTWARE.
21 */
22
23#include    <X11/X.h>
24#include    "scrnintstr.h"
25#include    "windowstr.h"
26#include    "dixfontstr.h"
27#include    "mi.h"
28#include    "regionstr.h"
29#include    "globals.h"
30#include    "gcstruct.h"
31#include    "shadow.h"
32#include    "fb.h"
33
34#if ROTATE == 270
35
36#define WINSTEPX(stride)    (stride)
37#define WINSTART(x,y)       (((pScreen->height - 1) - y) + (x * winStride))
38#define WINSTEPY()	    -1
39
40#elif ROTATE == 90
41
42#define WINSTEPX(stride)    (-stride)
43#define WINSTEPY()	    1
44#define WINSTART(x,y)       (((pScreen->width - 1 - x) * winStride) + y)
45
46#else
47
48#error This rotation is not supported here
49
50#endif
51
52#ifdef __arm__
53#define PREFETCH
54#endif
55
56void
57FUNC (ScreenPtr	    pScreen,
58      shadowBufPtr  pBuf);
59
60void
61FUNC (ScreenPtr	    pScreen,
62      shadowBufPtr  pBuf)
63{
64    RegionPtr	damage = shadowDamage(pBuf);
65    PixmapPtr	pShadow = pBuf->pPixmap;
66    int		nbox = REGION_NUM_RECTS (damage);
67    BoxPtr	pbox = REGION_RECTS (damage);
68    FbBits	*shaBits;
69    Data	*shaBase, *shaLine, *sha;
70    FbStride	shaStride, winStride;
71    int		shaBpp;
72    int		shaXoff, shaYoff;   /* XXX assumed to be zero */
73    int		x, y, w, h;
74    Data	*winBase, *win, *winLine;
75    CARD32	winSize;
76
77    fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff);
78    shaBase = (Data *) shaBits;
79    shaStride = shaStride * sizeof (FbBits) / sizeof (Data);
80
81    winBase = (Data *) (*pBuf->window) (pScreen, 0, 0,
82					SHADOW_WINDOW_WRITE,
83					&winSize, pBuf->closure);
84    winStride = (Data *) (*pBuf->window) (pScreen, 1, 0,
85					  SHADOW_WINDOW_WRITE,
86					  &winSize, pBuf->closure) - winBase;
87
88    while (nbox--)
89    {
90        x = pbox->x1;
91        y = pbox->y1;
92        w = (pbox->x2 - pbox->x1);
93        h = pbox->y2 - pbox->y1;
94
95	shaLine = shaBase + (y * shaStride) + x;
96#ifdef PREFETCH
97	__builtin_prefetch (shaLine);
98#endif
99	winLine = winBase + WINSTART(x, y);
100
101        while (h--)
102        {
103	    sha = shaLine;
104	    win = winLine;
105
106            while (sha < (shaLine + w - 16))
107            {
108#ifdef PREFETCH
109		__builtin_prefetch (sha + shaStride);
110#endif
111		*win = *sha++;
112		win += WINSTEPX(winStride);
113		*win = *sha++;
114		win += WINSTEPX(winStride);
115		*win = *sha++;
116		win += WINSTEPX(winStride);
117		*win = *sha++;
118		win += WINSTEPX(winStride);
119
120		*win = *sha++;
121		win += WINSTEPX(winStride);
122		*win = *sha++;
123		win += WINSTEPX(winStride);
124		*win = *sha++;
125		win += WINSTEPX(winStride);
126		*win = *sha++;
127		win += WINSTEPX(winStride);
128
129		*win = *sha++;
130		win += WINSTEPX(winStride);
131		*win = *sha++;
132		win += WINSTEPX(winStride);
133		*win = *sha++;
134		win += WINSTEPX(winStride);
135		*win = *sha++;
136		win += WINSTEPX(winStride);
137
138		*win = *sha++;
139		win += WINSTEPX(winStride);
140		*win = *sha++;
141		win += WINSTEPX(winStride);
142		*win = *sha++;
143		win += WINSTEPX(winStride);
144		*win = *sha++;
145		win += WINSTEPX(winStride);
146            }
147
148            while (sha < (shaLine + w))
149            {
150		*win = *sha++;
151		win += WINSTEPX(winStride);
152            }
153
154	    y++;
155	    shaLine += shaStride;
156	    winLine += WINSTEPY();
157        }
158        pbox++;
159    } /*  nbox */
160}
161